Gulls to the Horizon

A blog about gull observations by a Dutch larophile

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Category Archives: Great Black-backed Gull

Great Black-backed Gulls – 20160219

February 19, 2016 larus marinus 2cy larus marinus 3cy larus marinus adult Leave a comment

Group effort: ring reading during sand suppletion activities at Scheveningen – 2015

May 13, 2015 Scheveningen 2015 2 Comments

2cy Great Black-backed Gull with yellow/pink-ish bill – 20140216

February 28, 2014 larus marinus larus marinus 2cy Leave a comment

IJmuiden – 20130922

September 29, 2013 larus argentatus larus argentatus 2cy larus argentatus adult larus fuscus larus fuscus adult larus marinus larus marinus adult larus michahellis larus michahellis 1cy Leave a comment

1000 Dutch juvenile gulls fitted with green tibia ring

July 21, 2012 Leave a comment

Gull behavior: the forward posture

November 11, 2011 Leave a comment

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Images of (presumed) hybrid Herring Gull x Lesser Black-backed Gull Green YDJB
Primary P5 pattern variation in Dutch Herring Gull YBUF over multiple seasons
IJmuiden Gull Research Team season 2022 review
IJmuiden Gull Research Team season 2021 review
IJmuiden Forteiland gulls on Dutch TV – 20211022

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Gull behavior explained: Choking
Studying bill and eye characteristics in European Herring Gulls
Gull behavior: the forward posture
Identifying nearly-fledged Herring Gulls and Lesser Black-backed Gulls in the field
The Mew Call
Lesser Black-backed Gull chicks - 20190603
Adult Scandinavian Herring Gulls in Stockholm, Sweden - 20150221
Marked Birds Database update - a new approach
Tertial spots in sub-adult and adult gulls
Primary pattern variation in individual European Herring Gull

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